Find all solutions to the equation. Express each result in radians.cos x = - 
A. 
+ 2?n, 
+ 2?n
B. 
+ 2?n, 
+ 2?n
C. 
+ 2?n, - 
+ 2?n
D. 
+ 2?n, 
+ 2?n
Answer: A
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Solve the problem.It has been found that the less income people have, the more likely they are to report that their health is fair or poor. The function 
models the percentage of Americans reporting fair or poor health, f(x), in terms of annual income, x, in thousands of dollars. Find and interpret f(24).
A. f(24) ? 16.4; 24% of Americans earning $16.4 thousand annually report fair or poor health. B. f(24) ? $17.4; 24% of Americans earning $17.4 thousand annually report fair or poor health. C. f(24) ? 17.4; 17.4% of Americans earning $24 thousand annually report fair or poor health. D. f(24) ? 16.4; 16.4% of Americans earning $24 thousand annually report fair or poor health.
Complete the statement using the indicated property.-9(x + 3) = ______ , distributive
A. x - 27 B. -9x - 27 C. 9x - 27 D. -9x + 3
Convert the units using unit fractions.6750 lb = 
tons
A. 3
B. 6
C. 4
D. 2
Solve the problem.A ball is thrown vertically upward with an initial velocity of 160 feet per second. The distance in feet of the ball from the ground after t seconds is 
For what intervals of time is the ball less than 336 above the ground (after it is tossed until it returns to the ground)?
A. between 0 and 2.5 seconds and between 7.5 and 10 seconds B. between 0 and 3 seconds and between 7 and 10 seconds C. between 3 and 7 seconds D. between 0 and 4.5 seconds and between 5.5 and 10 seconds